Mercedes-Benz SLC-Class, R172 (USA / CAN)

Differential fluid capacity & service interval

Mercedes-Benz SLC-Class, R172 (USA / CAN) differential fluid capacity ranges from 0,8 to 1,2 liters. Service intervals occur every 46500 miles or 48 months. The data covers 7 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • SLC 300, 172.438 (2016-2020)
  • Rear
  • Use: Normal
  • Capacity 0,95 liter
  • Code: 187 FE, Ø 187 mm
  • SLC 300, 172.438 (2016-2020)
  • Rear
  • Use: Normal
  • Capacity 1,1 liter
  • Code: 200 FE Ø 200 mm
  • SLC 300, 172.438 (2016-2020)
  • Rear
  • Use: Normal
  • Capacity 1,2 liter
  • Code: 215 FE, Ø 215 mm
  • SLC 300, 172.438 (2016-2020)
  • Rear, light alloy housing
  • Use: Normal
  • Fill up to lower edge of level plug opening
  • Code: ALU-HAG
  • SLC 43 AMG, 172.466 (2016-2020)
  • Rear
  • Use: Normal
  • Capacity 1,2 liter
  • Change 46500 miles/ 48 months
  • Code: 215 FE, Ø 215 mm
  • SLC 43 AMG, 172.466 (2016-2020)
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Code: FE Ø 183 mm
  • SLC 43 AMG, 172.466 (2016-2020)
  • Rear, light alloy housing
  • Use: Normal
  • Fill up to lower edge of level plug opening
  • Code: ALU-HAG

Additional Notes

  • The Mercedes-Benz SLC-Class R172 rear differential fluid specifications list three distinct capacity values for the SLC 300 (172.438): 0.95 liter, 1.1 liter, and 1.2 liter, all under normal use conditions. Multiple capacity figures for the same component typically reflect different differential unit variants or axle ratio configurations that may be fitted to the same model.
  • A separate SLC 300 entry specifies a light alloy housing rear differential, where the correct fill level is determined by the lower edge of the level plug opening rather than a fixed volume. Level-plug-referenced filling is standard practice for differentials without a fixed-volume specification, as the plug position accounts for thermal expansion and unit geometry.
  • The SLC 43 AMG (172.466) rear differential carries a 1.2-liter capacity figure alongside a defined service interval of 46,500 miles or 48 months under normal use conditions. The dual-limit interval means whichever threshold is reached first would trigger a fluid change.
  • A second SLC 43 AMG rear differential capacity entry lists 0.8 liter, which is notably lower than the 1.2-liter figure also listed for the same model. The difference between the two values indicates separate differential unit variants are accounted for within the 172.466 configuration.
  • The SLC 43 AMG also includes a light alloy housing rear differential entry specifying fill to the lower edge of the level plug opening, mirroring the fill method listed for the SLC 300 light alloy housing variant. Both entries apply under normal use conditions across the 2016-2020 model years.
  • No service change interval is listed for any of the SLC 300 rear differential entries, while the SLC 43 AMG carries an explicit 46,500-mile or 48-month interval for one of its configurations. The presence of a defined interval for the AMG variant reflects the higher-output drivetrain demands associated with the 43 AMG powertrain.

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